This is what I have seen on the public land I hunt-
Pipelines,powerlines,clear cuts hunting with rifle it doesn't bother them one bit brushed in or not.
Now soon as I set it in the brush brushed in or not they will not come within 100 yards of it, the only time I have seen deer from my blind while hunting back in the scrub is when I'm more then 2 miles back in the scrub, when back that far it doesn't seem to bother them as much but I typically only see younger less mature deer from it.
Take what I posted with a grain of salt because it might not be typical of other deer herds, the herd I hunt is some of the most pressured spooky natured deer you will ever find.